The invention relates to a foldable safety barrier to be
secured in an opening, such as a door opening, a staircase or a window, and comprising
a frame having an upper cross member and a lower cross member as well as first and
second lateral posts, said upper and lower cross members as well said lateral posts
being adapted to secure a covering which is defined by the upper and lower cross
members as well as by the lateral posts, said upper and lower cross members consisting
of two parts which are mutually displaceable so that the length of the upper and
lower cross members may be adjusted, said lateral posts being provided with a hinge
link to fold the lateral posts into the plane of the safety barrier.

Such safety barriers are used e.g. in connection with journeys
where they may be installed in a holiday flat, a hotel room, a summer cottage, etc.

Usually, the safety barriers are based on separate pipes,
typically four, which are assembled to a frame, and which, prior to assembly, are
passed through casings in a square piece of fabric which, after assembly, is partly
fixed round the assembled pipe frame.

This frame is raised to a vertical position, and a bolt
is typically mounted at the four ends, two in each of the horizontal pipes, said
bolt having a rubber-coated head mounted therein which is fixed in an opening or
a door frame. This fixing subjects the frame to pressure, and when fixed sufficiently
the frame is safe enough to deny children up to a certain age access to or to prevent
them from falling down stairs.

The drawback of these structures is that they are very
cumbersome to assemble, and their size makes it almost impossible to carry them
along on journeys e.g. in trunks because of the length of the pipes.

Further, it may be difficult to comply with safety standards
since, typically, it cannot be controlled whether the safety barrier is fixed sufficiently.

DE 19742636 discloses a foldable frame for door safety purposes, where the frame is
composed of upper and lower cross members as well as two lateral posts. Folding
takes place in that two hinge brackets are mounted in the lateral posts to allow
the lateral posts to be folded inwards toward each other so that the frame occupies
less space during transport. A similar frame is known from US Patent No. 5704164.

It is common to the two known frames that the outer dimensions
of the hinge brackets are different from those of the lateral posts, which means
that in a folded-out state the frame has shoulders which a child may use when attempting
to climb over the safety barrier.

Accordingly, the object of the invention is to provide
a safety barrier which is safer than the known ones.

The object of the invention is achieved by a safety barrier
of the type stated in the introductory portion of claim 1 and known from
US - A - 55 31258 which is characterized in that the outer dimensions of the hinge link
and the first and second lateral posts are the same in the direction parallel to
the upper and lower cross members when the safety barrier is in a folded-out state,
and that the outer dimensions of the hinge link and the first and second lateral
posts correspond closely in the direction parallel to the shafts of the hinge link,
and that the hinge links are provided with a lock which comprises two push-buttons
which are spring-loaded, said lock being adapted to lock the lateral posts in a
non-folded state and to release the lock when the safety barrier is to folded together.

Hereby, the hinge links cannot be used as a support if
a child tries to climb over the safety barrier, and a safety barrier is provided.

When, as stated in claim 2, the lateral posts are coupled
to the hinge link by means of their separate shafts, the hinge parts of the safety
barrier are easier to manufacture with outer dimensions corresponding to those of
the lateral posts.

A particularly advantageous way of making the hinge links
in order to improve the safety additionally is, as stated in claim 3, that the push-buttons
are adapted to affect plate parts which, from a position in which they are locked
against forwardly projecting parts, are moved into channels which allow the pipes
to be rotated about the shafts.

The strength of safety barrier itself may be increased,
if, as stated in claim 4, the upper and lower cross members are coupled to the lateral
posts with four angle brackets, each angle bracket having first and second bracket
parts, said first bracket part being coupled to the lateral posts, said second bracket
part being coupled to the upper and lower cross members, and that fixing parts facing
toward the opening are coupled to the free end of the second bracket part.

The fixing parts are expediently configured as stated in
claim 5 in that the fixing parts at one end of the upper cross member are formed
by a threaded rod carrying a ferrule at its free end, and at the other end by a
threaded rod having a ferrule which is additionally coupled to a clamping device.
This allows easy adjustment of the safety barrier.

To ensure that the safety barrier is sufficiently fixed
in an opening, it is an advantage if, as stated in claim 6, a pressure indicator
is additionally coupled to at least one of the bracket parts.

This pressure indicator is preferably provided in that,
as stated in claim 7, it is formed by a sleeve having a thick part provided at one
end which is affected by a spring element disposed in a housing, which is arranged
in the bracket and consists of first and second sub-housings, and such that one
end of the spring element engages the thick part of the sleeve and the other end
thereof engages a shoulder in the first sub-housing, said sleeve having gripper
hooks at its free end which engage the opposite side of the same shoulder in the
second sub-housing, said shoulder defining the first and second sub-housings.

To fix the lower cross member effectively, it is expedient,
as stated in claim 8, that the fixing parts at one end of the lower cross member
are formed by a threaded rod having ferrules and at its other end by a housing having
a block, said block being adapted to be moved axially out of the housing during
angular displacement.

The invention will now be explained more fully with reference
to the drawing, in which

fig. 1

shows a foldable safety barrier according to the invention in a folded-out state,
seen from the front and before it is fixed in an opening,

fig. 2

shows the safety barrier of fig. 1, but now fixed in an opening,

fig. 3

shows the safety barrier of fig. 2 in a folded-together state, while

figs. 4a - 4e

show a hinge used in the safety barrier of figs. 1 - 3 in different working
positions.

Fig. 1 shows a foldable safety barrier according to the
invention with parts of the safety barrier shown in section. The safety barrier
consists of an upper cross member 1 and a lower cross member 2 as well as two lateral
posts designated 3 and 4, respectively. The upper cross member 1 is connected with
one end of the two lateral posts with the shown brackets 5 and 6, while the lower
cross member is connected with the other end of the lateral posts with the shown
brackets 7 and 8.

The upper and lower cross members are configured identically,
and, as will be seen, they consist of two pipes designated 9 and 10 which may be
inserted into each other and be secured in given positions, where one pipe in the
figure, the shown pipe 9, is formed with a plurality of holes in which a button
11 with a spring load 12, positioned at one end of the pipe 10, may engage and lock
the pipes 9, 10 in given positions. Suitable selection of a hole, in which the button
11 is to lock the pipes 9, 10 to each other, allows the width of the safety barrier
to be adapted to a given opening, as will be explained more fully later.

As will additionally be seen, the two lateral posts 3,
4 are configured identically and consist of two pipes 13, 14 interconnected via
hinge links 15, 19, said pipes being connected with the hinge parts by means of
shafts 17, 18 which extend through the hinge link and which may be constructed as
threaded rods, bolts and other similar shafts constructed in a known manner.

As will additionally be seen in the figure, the hinge link
has a push-button 16 which, as will be explained later, is adapted to lock the two
pipes 13, 14 connected with the hinge link, when the safety barrier is in a folded-out
state, and to release the lock when the safety barrier is to be folded together.

It is noted that the outer dimensions of the hinge links
15, 19 correspond closely to the outer dimensions of the pipes 13, 14.

The brackets 5 - 8 are essentially identical and have two
legs 26, as will be seen at the bracket 5. The leg 26 is connected with the pipe
13 on the lateral post 3 by means of a shaft which extends through the pipe 13 and
the leg 26, and which may be configured as a threaded rod, bolt or the like. In
the other leg, the one pipe 10 of the upper cross member is inserted into the leg.
As will additionally be seen, the two legs 26 are interconnected by means of a plate
member, in which holes are drilled, one of these being designated 29. These holes
are intended to secure a covering member (not shown) in the area which is defined
by the upper and lower cross members 1, 2 as well as by the lateral posts 3, 4,
said covering being designated 28.

The figures show four brackets, of which a first bracket
6 is formed with adjustment and clamping means, while a second one 7 is just formed
with clamping means. The two last ones are formed with adjustment means and optionally
a pressure indicator. The adjustment means are identical in the four brackets and
consist of a threaded rod (30b) which is terminated by a fer rule 30 at one end.
The threaded rod cooperates either with threads provided in the bracket or with
threads provided in a sleeve 32, which, as will be explained below, is intended
to constitute a pressure indicator. The sleeve 32 forms part of a pressure indicator
and is therefore preferably coloured, e.g. red, cf. the following.

Further, the threaded rod 30b has screwed on to it a nut
31 which is intended to lock the threaded rod in a given position, as the nut may
be tightened against the sleeve 32 which is formed with a thicker part 36. As will
be seen, the sleeve is movable in a housing which consists of two sub-housings designated
33 and 34. The two sub-housings are separated by a shoulder 35. The sleeve 32 is
formed with a plurality of spring elements 37 which hold the sleeve in the housing
33, 34, when the spring elements are pressed into the second sub-housing.

Inside the sub-housing 33, in which the spring element
37 is positioned, it engages the shoulder 35 at its one end and the thicker part
36 of the sleeve 32 at its other end. Hereby, when the spring element 37 is not
subjected to impacts, the sleeve will be locked by the spring elements which engage
the shoulder. If the ferrule is subjected to pressure, the spring element will be
pressed together, and the sleeve 32 will then be moved in the sub-housings 33 and
34. As will be explained later, the threaded rod, ferrule and sleeve will act as
adjustment means which are equipped with a pressure indicator.

The bracket 7, which is provided with clamping means, is
composed of a block 39 having an engagement face 44 which is movable in a housing
38. The movement is provided by two parallel rods 40, 41 which, at their ends, have
the shown pivots 42, 43 in the housing 38 and 45, 46 on the block 39. The block
operates such that when affected by a vertical force it will rotate about the axes
of rotation and be displaced in a horizontal plane out of the housing, so that the
distance from the engagement face to the pivots 42, 43 is maximum.

The bracket 6, which is also formed with clamping means,
cooperates with the same type of adjustment means as are explained in connection
with the brackets 5 and 8, but without a pressure indicator, i.e. consists solely
of a threaded rod 24 with a ferrule 25 and a lock nut. On the threaded rod behind
the lock nut there is arranged a movable housing 21 having inner threads which cooperate
with the threaded rod 24. The housing 21 accommodates a groove 48 in which a pin
49 provided on a part 50 of a handle 20 may slide. As will be seen, the part 50
on the handle 20 is in contact with the housing 21. The handle 20 may be moved about
an axis of rotation 23. Inside the bracket, the threaded rod is connected with a
spring (not shown) which pulls the threaded rod 24 and the housing 21. When the
handle 20 is pressed downwards, the part 50 will displace the housing 21 and the
threaded rod 24 with ferrule to the right in the figure. When the handle is horizontal,
it will be locked and can be activated only after activation of a push-button 22
on the part 50 which releases a locking mechanism (not shown).

The structure of the hinge links 15 and 19 will now be
explained in connection with figures 4a - 4e.

Figure 4a shows the hinge link 15 which connects the pipes
13 and 14 in fig. 1. The hinge link has two shafts of rotation designated 51 and
52 in the figures- The hinge link may be locked and opened by means of a spring-loaded
push-button, as will be explained below.

A spring is arranged centrally in the hinge link and applies
a force to push-buttons 53 and 54 at its free ends. The side of the push-buttons
facing into the hinge link 15 engages plate parts 62, 63, which are provided with
holes for the passage of the spring 55 to the push-buttons 53 and 54.

In the position shown in fig. 4b, the hinge link is locked,
as the plates with their one outer arm engage forwardly projecting parts, designated
62 - 65, cf. also fig. 4c, provided in the pipes 13 and 14.

As will additionally be seen, channels 58, 59 are provided
between the forwardly projecting parts 62, 64 and 63, 65, respectively.

Fig. 4e shows further details of the hinge in the direction
of the arrow in fig. 4d. The shoulders 63 and 64 are formed with inclined flanks
68, 69 on which the plates 56, 57 may slide, when the legs 14, 15 are moved from
the position shown in fig. 4d to the position shown in the other figures.

When the legs have been straightened completely, the plates
will leave the flanks 68, 69 and click into and rest in the shown cavities 66, 67.
When the safety barrier is to be folded together again, the push-buttons 53, 54
are merely activated, and then the plates 56, 57 may again be moved to the position
shown in fig. 4e through the narrowed section between the cavities 66, 67 and the
flanks 68, 69.

it will now be explained how the safety barrier according
to the invention is used, it being assumed that the safety barrier is constructed
as shown, in the folded-together state shown in fig. 3.

The push-buttons 53, 54 on the two hinge links are activated,
following which the safety barrier is unlocked and folded out to the position shown
in fig. 1. The lower cross member of the safety barrier is placed against the lower
frame whose upper and lower sides are designated 66, 67 in fig. 1, while the upper
part of the other side is designated 68, whereas the lower part of the other side
is just shown in fig. 2. The push-buttons 11 are activated, and the pipes 9, 10
are extended as much as possible, corresponding to the opening defined by the frame,
following which the two threaded rods 24, 29 with ferrules 25, 30 are adjusted to
a distance which is about 3 mm from the frame. The block, too, is placed close to
the frame so as be about 3 mm from the frame. The safety barrier is now raised in
the frame, and vertical pressure from above causes the lower part of the safety
barrier to be fixed in the frame.

Then the handle 20 is activated, thereby causing fixing
against the upper part of the frame. It is now checked that the sleeves 36 cannot
be seen. If it turns out that they can be seen, the fixing is not great enough to
comply with current regulations, and the safety barrier must be loosened from the
frame, and threaded rods with ferrules must be screwed slightly further out, following
which the fixing is again performed as explained above, and then the sleeve should
be concealed in the brackets.

A foldable safety barrier to be secured in an opening, such as a door
opening, a staircase or a window, and comprising a frame having an upper cross member
(1) and a lower cross member (2) as well as first and second lateral posts (3,4),
said upper (1) and lower (2) cross members as well as said lateral posts (3,4) being
adapted to secure a covering (28) which is defined by the upper and lower cross
member (1,2) as well as by the lateral posts (3,4), said upper and lower cross member
(1,2) consisting of two parts which are mutually displaceable so that the length
of the upper and lower cross members (1,2) may be adjusted, said lateral posts (3,4)
being provided with a hinge link (15,19) to fold the lateral posts (3,4) into the
plane of the safety barrier, characterized in that the outer dimensions of
the hinge link (15,19) and the first and second lateral posts (3,4) are the same
in the direction parallel to the upper and lower cross members (1,2) when the safety
barrier is in a folded-out state, and that the outer dimensions of the hinge link
(15,19) and the first and second lateral posts (3,4) correspond closely in the direction
parallel to the shafts (17,18) of the hinge link (15,19), and that the hinge links
are provided with a lock which comprises two push-buttons (53,54) which are spring-loaded,
said lock being adapted to lock the lateral posts (3,4) in a non-folded state and
to release the lock when the safety barrier is to be folded together.A safety barrier according to claim 1, characterized in that
the lateral posts are coupled to the hinge link by means of their separate shafts.A safety barrier according to claim 1-2, characterized in that
the push-buttons are adapted to affect plate parts which, from a position in which
they are locked against forwardly projecting parts, are moved into channels which
allow the pipes to be rotated about the shafts.A safety barrier according to claims 1-3, characterized in that
the upper and lower cross members are coupled to the lateral posts with four angle
brackets, each angle bracket having first and second bracket parts, said first bracket
part being coupled to the lateral posts, said second bracket part being coupled
to the upper and lower cross members, and that fixing parts facing toward the opening
are coupled to the free end of the second bracket part.A safety barrier according to claim 4, characterized in that
the fixing parts at one end of the upper cross member are formed by a threaded rod
carrying a ferrule at its free end, and at the other end by a threaded rod having
a ferrule which is additionally coupled to a clamping device.A safety barrier according to claim 4 or 5, characterized in that
a pressure indicator is additionally coupled to at least one of the bracket parts.A safety barrier according to claim 6, characterized in that
the pressure indicator is formed by a sleeve having a thick part provided at one
end which is affected by a spring disposed in a housing, which is arranged in the
bracket and which consists of first and second sub-housings, and such that one end
of the spring engages the thick part of the sleeve and the other end thereof engages
a shoulder in the first sub-housing, said sleeve having gripper hooks at its free
end which engage the opposite side of the same shoulder in the second sub-housing,
said shoulder serving to define the first and second sub-housings.A safety barrier according to claims 5-7, characterized in that
the fixing parts at one end of the lower cross member are formed by a threaded rod
having a ferrule and at its other end by a housing having a block, said block being
adapted to be moved axially out of the housing during angular displacement.